if [ -x /usr/bin/yay ]; then
  alias yai='yay -S'	# install package(s)
  alias yas='yay -Ss'	# search packages
  alias yad='yay -Si'	# description of the package
  alias yau='yay -Syu'	# update all packages
  alias yar='yay -Rns'	# remove package(s)
  alias yac='yay -Yc'	# clean unwanted packages
else
  alias {yai,yas,yad,yau,yar,yac}='echo "Sorry, yay not installed"'
fi